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雷金睿,陈宗铸,陈小花,李苑菱,吴庭天.1980-2018年海南岛土地利用与生态系统服务价值时空动态变化.生态学报,2020,(14).http://dx.doi.org/10.5846/stxb201907261580  
1980-2018年海南岛土地利用与生态系统服务价值时空动态变化
Spatial and Temporal Changes in Land Use and Ecosystem Service Values on Hainan Island, 1980-2018
投稿时间:2019-07-26  修订日期:2020-03-27
DOI: " target="_blank" title="转向doi官网查询:http://dx.doi.org">10.5846/stxb201907261580
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摘要:
以海南岛为研究区,利用1980-2018年5期土地利用数据,借助ArcGIS 技术,综合运用价值当量因子法、生态系统服务变化指数(ESCI)、空间统计分析等方法,探究了海南岛土地利用与生态系统服务价值(ESV)的时空动态变化特征。结果表明:(1)林地是海南岛最主要的自然生态系统,占62%以上,林地面积先升高后降低,在研究期始末几乎持平;建设用地增加迅猛,特别是在2010年以后,增长率高达122.46%,其次水域增长率为20.94%。土地利用主要呈现出草地转为林地,耕地、林地转为建设用地或水域的变化特征。(2)1980-2018年海南岛ESV总体表现为先增加后降低的变化趋势,共增加51.59亿元,增长率为2.56%。其中林地ESV占比最高,达70%以上;单项ESV以水文调节、气候调节为主,两者占总ESV的50%以上。水域面积增长是ESV增加的主要原因。(3)在空间分布上,海南岛ESV存在着明显的中部高、四周低的空间分异特征,在时间序列上高值区进一步萎缩、低值区逐渐扩展。(4)1980-2018年海南岛5个时期的ESV及其变化在空间分布上具有显著的正向自相关性;ESV变化的热点图与ESCI空间分布特征一致,ESV增值热点区集中分布在大广坝水库等库区、海南岛东北部水产养殖场等地,ESV损失冷点区主要出现在海口和三亚等重要城区、洋浦经济开发区以及旅游资源丰富的沿海地区。研究结果为海南岛土地资源利用管理、合理布局和保护生态空间、认识岛屿生态系统服务功能变化提供了理论依据和决策支持。
Abstract:
ArcGIS was used to analyze land use data from Hainan Island collected during five time periods from 1980-2018. More specifically, the equivalent factor method, ecosystem service change index (ESCI) and the spatial statistical analysis method were utilized to explore the temporal and spatial changes in land use and ecosystem service values (ESV) on Hainan island through the years. The four major results are as follows: (1) Forestland is the most dominant natural ecosystem on Hainan Island, accounting for more than 62% of the land. Over the course of the study period, the forestland area first increased and then decreased, so it was almost the same at the beginning and the end of the time frame. The area of constructed land increased rapidly, especially after 2010. The growth rate of constructed land was as high as 122.46%, whereas the second-fastest growing land type, water area, achieved a growth rate of 20.94%. The land use data mainly showed that grassland changed to forest land, and that farmland and forestland changed to constructed land or water area. (2) From 1980 to 2018, the Hainan Island ESV first increased and then decreased, with a total increase of 5.159 billion yuan and a growth rate of 2.56%. The ESV of forestland accounted for the highest proportion, more than 70% of the value. The main ecosystem services provided were hydrological regulation and climate regulation, to which were attributed over 50% of the ESV. The increase in water area was the main reason for the overall increase in ESV. (3) Spatially, the ESV of Hainan Island differed with topography, with higher values in the middle area and the low surrounding area. Through the five time periods, much of the value of the land was lowered. (4) Overall, the spatial distribution of ESV and the changes on Hainan Island from 1980 to 2018 had a significant and positive autocorrelation. The hotspot map of ESV changes was consistent with the spatial distribution of ESCI. The areas in which ESV increased were mainly distributed in storage areas, such as the Daguangba reservoir and the aquaculture farms in the northeast of Hainan Island. Areas in which ESV declined were mainly distributed in important urban areas, such as Haikou, Sanya, the Yangpu economic development zone and coastal areas with thriving tourism industries. These findings help scientists better understand the changes in island ecosystem service functions and provide a theoretical basis for policymaking regarding the utilization and management of land resources on Hainan Island and the rational delineation and protection of ecological space.

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